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, (NdModeL) A. s. HENNQ SNAP HOOK.

I No. 250,534.

Patented Dec. 6

N. PETERS PhnmLilhognpher, Washinglon. D. C.

UNITED STATES PATENT OFFICE.

ALFRED S. HENN, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO W. 85 E. T. FITCH, OF SAME PLACE.

SNAPI-HOOK.

SPECIFICATION formingpart of Letters Patent No. 250,534, dated December 6, 1881.

Application filed October 28, 1881. (No model.)

To all whom it may concern:

Be it known that I, ALFRED S. HENN, of New Haven, in the county of New Haven and- State of Connecticut, haveinvented a new Improvement in Snap-Hooks; and I do hereby declare the following, when taken in connection with the accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same,

[0 and which said drawings constitute part 01'' this specification, and represent, in-

Figure 1, a perspective view; Fig. 2, perspective View of thecasting; Fig. 3, transverse section on line w as; Fig. 4, transverse section on line 2 z of Fig. 2; Figs. 5 and 6, tranverse sections on same lines of the completed hook.

This invention relates to an improvementin the manufacture of that class of snap-hooks in which a bolt is arranged in the shank of the hook to slide longitudinally toward and from the point of the hook, so as to close or open the mouth of the hook.

As usually constructed, the shank of the hook is cored to make a chamber for the bolt and spring. Such coring is an expensive part of the manufacture,notonly because of the additional labor, but because of the unavoidable loss of many castings.

The object of this invention is avoid the use of a core and form the barrel or the seat for the bolt independent of a core; and it consists in castingtheshanklongitudinallyopen, and then closing the two edges together to complete the barrel, as more fully hereinafter described.

5 In Fig. 2 I show apattern from which the hook is cast, or, what is the same thing, the book as it comes from the sand, A representingthe part of the gate through which the metal flows to the mold, the hook B being turned to one side into the position necessary for moldo ing that part. The shank C, which terminates at one end in the hook B and at the other end in the loop I), is made open upon its uppersurface, as seen in Figs. 3 and 4-that is, substantially U shape in transversesection. The sides 5 at the forward or hook end are made slightly narrower than the rear portions. At the rear or loop end a vertical end piece, a, is cast of a shape to form the rear end of the barrel when complete.

The mold is prepared in the usual manner, and the casting made of the shape as seen in Fig. 2. Then the casting is taken to dies titted for the purpose, and the two sides are bent together, as seen in Figs. 5 and 6, bringing the two edges ot the rear portion together, as at d, Fig. 6, and leaving the groove 0 at the front part or hook end, as seen in Fig. 5, which completes the barrel ready to receive the bolt E, which is introduced in the usual manner, with the thumb piece F extending through the groove 6, also in the usual manner. The sides close over the rear end piece, a, as seen in Fig.

1, so as to completely close'the rear end of the hook, the said end piece having a rest for the rear-end of the spring in the usual manner.

I make no claim to a hook having a longitudinal sliding bolt arranged in a barrel in the shank of the hook; but

What I do claim is-- The herein-described blank for snap-hook, consisting of the cast blank C, adapted to be closed to form the complete barrel, provided with the slot 6, substantially as described.

ALFRED S. HENN.

Witnesses:

JAMES B. JEssoP, Geo. A. JOHNSON. 

